encoding: use raw strings for encoding arguments This prevents the internals of Python from coercing a unicode to str on Python 2 and makes tests run with HGUNICODEPEDANTRY=1 a lot happier. Differential Revision: https://phab.mercurial-scm.org/D6051

revsetlang: use sysbytes() instead of blind encode() Otherwise we will call str.encode() on Python 2, which is wrong. sysbytes() does encode('utf-8') on Python 3. But the source is guaranteed ASCII, so it shouldn't matter. With this change, `hg` now runs with `HGUNICODEPEDANTRY=1` set. However, several tests are failing. Differential Revision: https://phab.mercurial-scm.org/D6050

global: use raw strings for namedtuple() Otherwise Python 2 will attempt to coerce unicode to str, which we don't want. Differential Revision: https://phab.mercurial-scm.org/D6049

attr: don't attempt to .encode() a str on Python 2 Otherwise it coerces automatically. Differential Revision: https://phab.mercurial-scm.org/D6048

procutil: use a raw string for module name Otherwise Python 2 will coerce unicode to str. Differential Revision: https://phab.mercurial-scm.org/D6047

global: use raw strings for __slots__ Otherwise Python 2 will coerce unicode to str at module load time. We don't like automatic string coercions. Differential Revision: https://phab.mercurial-scm.org/D6046

absorb: run cleanupnodes() within transaction also when not using obsmarkers scmutil.cleanupnodes() schedules stripping to be done after the current transaction, so we can safely run it within the transaction. This also means that the phase will be updated within the transaction, which I believe means that the initial (possibly incorrect) phase will not visible. Differential Revision: https://phab.mercurial-scm.org/D6037

py3: pass a str to getpass.getpass() Otherwise I see `password: b''` on the prompt. # skip-blame because just prefix Differential Revision: https://phab.mercurial-scm.org/D6041

py3: port things from chgserver.py I have installed mercurial on my personal laptop using Python 3.7. I also have hg aliased to chg. Before this commit, `hg version` didn't work. After this patch, things are better and now chg works. Differential Revision: https://phab.mercurial-scm.org/D6040

py3: make sure return value of posix.groupname() is bytes Differential Revision: https://phab.mercurial-scm.org/D6039

contrib: make check-code.py check code fragments embedded in test scripts

contrib: add line offset information to file check function of check-code.py This is a part of preparation to apply checking with check-code.py on code fragments embedded in *.t test scripts. This information will be useful to show correct line number in an actual file for errors detected in code fragments embedded in *.t test scripts.

contrib: change return value of file checking function of check-code.py This is a part of preparation to apply checking with check-code.py on code fragments embedded in *.t test scripts. After this patch, caller of _checkfiledata() can count number of errors in each code fragments of an actual file. This will be useful to share --per-file limitation by all embedded code fragments.

contrib: factor out actual error check for file data of check-code.py This is a part of preparation to apply checking with check-code.py on code fragments embedded in *.t test scripts. Newly added _checkfiledata() will be useful to apply checks on code fragments embedded in *.t test scripts.